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Commit a0e11da7 authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

fib_tests: Add tests for metrics on routes 



Add ipv4 and ipv6 test cases for metrics (mtu) when fib entries are
created. Can be used with kmemleak to see leaks with both fib entries
and dst_entry.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1620a336

tools/testing/selftests/net/fib_tests.sh

+138 −19
Original line number Diff line number Diff line
@@ -9,11 +9,11 @@ ret=0 
ksft_skip=4



# all tests in this script. Can be overridden with -t option

TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric"

TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics ipv4_route_metrics"

VERBOSE=0

PAUSE_ON_FAIL=no

PAUSE=no

IP="ip -netns testns"

IP="ip -netns ns1"



log_test()

{
@@ -47,8 +47,10 @@ log_test() 
setup()

{

	set -e

	ip netns add testns

	ip netns add ns1

	$IP link set dev lo up

	ip netns exec ns1 sysctl -qw net.ipv4.ip_forward=1

	ip netns exec ns1 sysctl -qw net.ipv6.conf.all.forwarding=1



	$IP link add dummy0 type dummy

	$IP link set dev dummy0 up
@@ -61,7 +63,8 @@ setup() 
cleanup()

{

	$IP link del dev dummy0 &> /dev/null

	ip netns del testns

	ip netns del ns1

	ip netns del ns2 &> /dev/null

}



get_linklocal()
@@ -639,11 +642,14 @@ add_initial_route6() 


check_route6()

{

	local pfx="2001:db8:104::/64"

	local pfx

	local expected="$1"

	local out

	local rc=0



	set -- $expected

	pfx=$1



	out=$($IP -6 ro ls match ${pfx} | sed -e 's/ pref medium//')

	[ "${out}" = "${expected}" ] && return 0
@@ -690,28 +696,33 @@ route_setup() 
	[ "${VERBOSE}" = "1" ] && set -x

	set -e



	$IP li add red up type vrf table 101

	ip netns add ns2

	ip -netns ns2 link set dev lo up

	ip netns exec ns2 sysctl -qw net.ipv4.ip_forward=1

	ip netns exec ns2 sysctl -qw net.ipv6.conf.all.forwarding=1



	$IP li add veth1 type veth peer name veth2

	$IP li add veth3 type veth peer name veth4



	$IP li set veth1 up

	$IP li set veth3 up

	$IP li set veth2 vrf red up

	$IP li set veth4 vrf red up

	$IP li add dummy1 type dummy

	$IP li set dummy1 vrf red up

	$IP li set veth2 netns ns2 up

	$IP li set veth4 netns ns2 up

	ip -netns ns2 li add dummy1 type dummy

	ip -netns ns2 li set dummy1 up



	$IP -6 addr add 2001:db8:101::1/64 dev veth1

	$IP -6 addr add 2001:db8:101::2/64 dev veth2

	$IP -6 addr add 2001:db8:103::1/64 dev veth3

	$IP -6 addr add 2001:db8:103::2/64 dev veth4

	$IP -6 addr add 2001:db8:104::1/64 dev dummy1



	$IP addr add 172.16.101.1/24 dev veth1

	$IP addr add 172.16.101.2/24 dev veth2

	$IP addr add 172.16.103.1/24 dev veth3

	$IP addr add 172.16.103.2/24 dev veth4

	$IP addr add 172.16.104.1/24 dev dummy1



	ip -netns ns2 -6 addr add 2001:db8:101::2/64 dev veth2

	ip -netns ns2 -6 addr add 2001:db8:103::2/64 dev veth4

	ip -netns ns2 -6 addr add 2001:db8:104::1/64 dev dummy1



	ip -netns ns2 addr add 172.16.101.2/24 dev veth2

	ip -netns ns2 addr add 172.16.103.2/24 dev veth4

	ip -netns ns2 addr add 172.16.104.1/24 dev dummy1



	set +ex

}
@@ -944,7 +955,7 @@ ipv6_addr_metric_test() 
	log_test $rc 0 "Modify metric of address"



	# verify prefix route removed on down

	run_cmd "ip netns exec testns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1"

	run_cmd "ip netns exec ns1 sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1"

	run_cmd "$IP li set dev dummy2 down"

	rc=$?

	if [ $rc -eq 0 ]; then
@@ -967,6 +978,74 @@ ipv6_addr_metric_test() 
	cleanup

}



ipv6_route_metrics_test()

{

	local rc



	echo

	echo "IPv6 routes with metrics"



	route_setup



	#

	# single path with metrics

	#

	run_cmd "$IP -6 ro add 2001:db8:111::/64 via 2001:db8:101::2 mtu 1400"

	rc=$?

	if [ $rc -eq 0 ]; then

		check_route6  "2001:db8:111::/64 via 2001:db8:101::2 dev veth1 metric 1024 mtu 1400"

		rc=$?

	fi

	log_test $rc 0 "Single path route with mtu metric"





	#

	# multipath via separate routes with metrics

	#

	run_cmd "$IP -6 ro add 2001:db8:112::/64 via 2001:db8:101::2 mtu 1400"

	run_cmd "$IP -6 ro append 2001:db8:112::/64 via 2001:db8:103::2"

	rc=$?

	if [ $rc -eq 0 ]; then

		check_route6 "2001:db8:112::/64 metric 1024 mtu 1400 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1"

		rc=$?

	fi

	log_test $rc 0 "Multipath route via 2 single routes with mtu metric on first"



	# second route is coalesced to first to make a multipath route.

	# MTU of the second path is hidden from display!

	run_cmd "$IP -6 ro add 2001:db8:113::/64 via 2001:db8:101::2"

	run_cmd "$IP -6 ro append 2001:db8:113::/64 via 2001:db8:103::2 mtu 1400"

	rc=$?

	if [ $rc -eq 0 ]; then

		check_route6 "2001:db8:113::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1"

		rc=$?

	fi

	log_test $rc 0 "Multipath route via 2 single routes with mtu metric on 2nd"



	run_cmd "$IP -6 ro del 2001:db8:113::/64 via 2001:db8:101::2"

	if [ $? -eq 0 ]; then

		check_route6 "2001:db8:113::/64 via 2001:db8:103::2 dev veth3 metric 1024 mtu 1400"

		log_test $? 0 "    MTU of second leg"

	fi



	#

	# multipath with metrics

	#

	run_cmd "$IP -6 ro add 2001:db8:115::/64 mtu 1400 nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2"

	rc=$?

	if [ $rc -eq 0 ]; then

		check_route6  "2001:db8:115::/64 metric 1024 mtu 1400 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1"

		rc=$?

	fi

	log_test $rc 0 "Multipath route with mtu metric"



	$IP -6 ro add 2001:db8:104::/64 via 2001:db8:101::2 mtu 1300

	run_cmd "ip netns exec ns1 ping6 -w1 -c1 -s 1500 2001:db8:104::1"

	log_test $? 0 "Using route with mtu metric"



	route_cleanup

}



# add route for a prefix, flushing any existing routes first

# expected to be the first step of a test

add_route()
@@ -1005,11 +1084,15 @@ add_initial_route() 


check_route()

{

	local pfx="172.16.104.0/24"

	local pfx

	local expected="$1"

	local out

	local rc=0



	set -- $expected

	pfx=$1

	[ "${pfx}" = "unreachable" ] && pfx=$2



	out=$($IP ro ls match ${pfx})

	[ "${out}" = "${expected}" ] && return 0
@@ -1319,6 +1402,40 @@ ipv4_addr_metric_test() 
	cleanup

}



ipv4_route_metrics_test()

{

	local rc



	echo

	echo "IPv4 route add / append tests"



	route_setup



	run_cmd "$IP ro add 172.16.111.0/24 via 172.16.101.2 mtu 1400"

	rc=$?

	if [ $rc -eq 0 ]; then

		check_route "172.16.111.0/24 via 172.16.101.2 dev veth1 mtu 1400"

		rc=$?

	fi

	log_test $rc 0 "Single path route with mtu metric"





	run_cmd "$IP ro add 172.16.112.0/24 mtu 1400 nexthop via 172.16.101.2 nexthop via 172.16.103.2"

	rc=$?

	if [ $rc -eq 0 ]; then

		check_route "172.16.112.0/24 mtu 1400 nexthop via 172.16.101.2 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1"

		rc=$?

	fi

	log_test $rc 0 "Multipath route with mtu metric"



	$IP ro add 172.16.104.0/24 via 172.16.101.2 mtu 1300

	run_cmd "ip netns exec ns1 ping -w1 -c1 -s 1500 172.16.104.1"

	log_test $? 0 "Using route with mtu metric"



	route_cleanup

}





################################################################################

# usage
@@ -1385,6 +1502,8 @@ do 
	ipv4_route_test|ipv4_rt)	ipv4_route_test;;

	ipv6_addr_metric)		ipv6_addr_metric_test;;

	ipv4_addr_metric)		ipv4_addr_metric_test;;

	ipv6_route_metrics)		ipv6_route_metrics_test;;

	ipv4_route_metrics)		ipv4_route_metrics_test;;



	help) echo "Test names: $TESTS"; exit 0;;

	esac